𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Activity–acidity relationship in zeolite ZSM-5. Application of Brönsted-type equations

✍ Scribed by Carla Costa; I.P Dzikh; José Manuel Lopes; Francisco Lemos; Fernando Ramôa Ribeiro

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
197 KB
Volume
154
Category
Article
ISSN
1381-1169

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Activity–acidity relationship in zeolite
Activity–acidity relationship in zeolite Y: Part 3. Application of Brönsted type equations
✍ C Costa; J.M Lopes; F Lemos; F.Ramôa Ribeiro 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 86 KB

The relation between activity and acidity in a variety of Y zeolite catalysts for the transformation of small olefins: ethene, propene, 1-butene and iso-butene, is presented. The acid site distribution of these samples was estimated by temperature-programmed desorption of ammonia, by using a numeric

1H solid-state NMR studies of the geomet
1H solid-state NMR studies of the geometry of Brønsted acid sites in zeolites H-ZSM-5
✍ Michael Hunger; Dieter Freude; Dieter Fenzke; Harry Pfeifer 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 419 KB

Broad-line 'H NMR and 'H MAS NMR were used to determine the geometry of the Bransted acidic sites in zeolites H-ZSM-5. The signals obtained correspond to bridging hydroxyl groups in Si-OH-Al arrangements with an H-Al distance of 0.246-0.252 nm. The concentration of hypothetical SiOHSi groups must be

Acidity and catalytic activity of mesopo
Acidity and catalytic activity of mesoporous ZSM-5 in comparison with zeolite ZSM-5, Al-MCM-41 and silica–alumina
✍ K. Suzuki; Y. Aoyagi; N. Katada; M. Choi; R. Ryoo; M. Niwa 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 821 KB

Acidity of mesoporous HZSM-5 prepared using amphiphilic organosilane template molecules was measured. Brønsted acid sites were observed in the prepared sample, and the number and the strength of Brønsted acid sites were determined quantitatively by a method of infrared-mass spectroscopy/temperature-

Generation of active sites for ethane ar
Generation of active sites for ethane aromatization in ZSM-5 zeolites by a solid-state reaction of zinc metal with Brønsted acid sites of the zeolite
✍ J. Heemsoth; E. Tegeler; F. Roessner; A. Hagen 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 139 KB

A zinc-modi®ed ZSM-5 catalyst was prepared by a solid-state reaction between zinc dust and H-ZSM-5. The resulting catalyst is as active for the aromatization of ethane as zinc-modi®ed ZSM-5 prepared by impregnation.